74 lines
2.3 KiB
Java
74 lines
2.3 KiB
Java
package no.birkett.kiwi;
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import java.util.HashMap;
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/**
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* Created by alex on 27/11/2014.
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*/
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public class Benchmarks {
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public static void testAddingLotsOfConstraints() throws DuplicateConstraintException, UnsatisfiableConstraintException, NonlinearExpressionException {
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Solver solver = new Solver();
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final HashMap<String, Variable> variables = new HashMap<String, Variable>();
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ConstraintParser.CassowaryVariableResolver variableResolver = new ConstraintParser.CassowaryVariableResolver() {
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@Override
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public Variable resolveVariable(String variableName) {
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Variable variable = null;
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if (variables.containsKey(variableName)) {
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variable = variables.get(variableName);
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} else {
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variable = new Variable(variableName);
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variables.put(variableName, variable);
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}
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return variable;
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}
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@Override
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public Expression resolveConstant(String name) {
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try {
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return new Expression(Double.parseDouble(name));
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} catch (NumberFormatException e) {
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return null;
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}
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}
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};
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solver.addConstraint(ConstraintParser.parseConstraint("variable0 == 100", variableResolver));
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for (int i = 1; i < 3000; i++) {
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String constraintString = getVariableName(i) + " == 100 + " + getVariableName(i - 1);
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Constraint constraint = ConstraintParser.parseConstraint(constraintString, variableResolver);
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System.gc();
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long timeBefore = System.nanoTime();
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solver.addConstraint(constraint);
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System.out.println(i + "," + ((System.nanoTime() - timeBefore) / 1000) );
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}
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}
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private static String getVariableName(int number) {
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return "getVariable" + number;
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}
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public static void main(String [ ] args) {
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try {
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testAddingLotsOfConstraints();
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} catch (DuplicateConstraintException e) {
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e.printStackTrace();
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} catch (UnsatisfiableConstraintException e) {
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e.printStackTrace();
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} catch (NonlinearExpressionException e) {
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e.printStackTrace();
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}
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}
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}
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